Earbud



FIG. 1 is a front perspective view of an earbud showing the claimed design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a side perspective view thereof;

FIG. 4 is another rear perspective view thereof;

FIG. 5 is another side perspective view thereof;

FIG. 6 is another rear perspective view thereof;

FIG. 7 is a side view thereof; and,

FIG. 8 is another side view thereof. 

CLAIM The ornamental design for an earbud, as shown and described. 